For the 2011 Chevrolet Impala, the low-beam headlight uses an H11 bulb, while the high beam uses an H9. The daytime running light also uses an H9. The supplied fitment data does not identify a projector or non-projector headlight distinction, so verify the existing bulb and connector before ordering.
- Fog light options are listed as H11 LED and H16 LED; confirm which application your vehicle uses.
- Front turn signals and parking lights use 4157NA, while front and rear side markers use 194NA.
- Rear brake and tail lights use 3057R, and the rear turn signal uses 3057. The center stop light is an integrated LED.
- Reverse lights use 921. License plate, step, ash, and glove-box applications may use 194 or 7441, depending on the location.
- Interior applications include 578 for dome and map lights, 912 for the trunk, and 37 for the vanity light.